UDA1334A I2S DAC Stereo Decoder Module

UDA1334A I2S DAC Stereo Decoder Module is a high-fidelity, low-cost audio solution designed to convert digital I2S signals into crisp, high-quality analog stereo output. This breakout board features the powerful NXP UDA1334A IC, which handles a wide range of audio sample rates and bit depths for versatile performance. Consequently, it provides a much cleaner audio signal than the standard PWM outputs found on many entry-level microcontrollers. The module includes an integrated 3.5mm stereo jack and header pins, allowing for seamless integration into DIY audio projects. Furthermore, its small form factor and wide voltage compatibility make it an ideal choice for portable media players and streaming devices. Therefore, you should utilize this module to upgrade your system’s audio capabilities with minimal development effort.

Key Features:

• High-Fidelity Audio: Delivers 24-bit digital-to-analog conversion for superior sound clarity compared to standard built-in DACs.
• Flexible Input: Supports multiple I2S formats including standard I2S, left-justified, and right-justified signals to ensure compatibility with various processors.
• Integrated 3.5mm Jack: Features a pre-soldered stereo headphone jack, enabling direct connection to speakers or headphones without extra wiring.
• On-board Voltage Regulator: Includes a 3.3V regulator, however, the module safely accepts a 3.3V to 5V power input.
• Silent Operation: Incorporates a digital de-emphasis filter and a mute function to eliminate “pop” noises during power transitions.

Technical Specifications:

• Operating Voltage: 3.3 V to 5.0 V DC
• DAC Resolution: 24-bit conversion
• Sampling Frequency (Fs): Supports 8 kHz to 96 kHz
• Signal-to-Noise Ratio (SNR): ≈ 100 dB
• Total Harmonic Distortion (THD): ≤ −90 dB
• Interface Type: I2S (Inter-IC Sound)
• Logic Level: 3.3 V (Typical)

Mechanical Specifications:

• Audio Output: 3.5mm Stereo Jack and Pin Headers
• PCB Material: High-grade FR-4 with tinned pads
• Mounting: 2.54mm (0.1 inch) standard breadboard-friendly headers
• Connector Durability: Robust RJ-type audio socket for repeated use

Dimensions:

• Board Length: ≈ 26.0 mm
• Board Width: ≈ 25.0 mm
• Board Height: ≈ 7.0 mm (including audio jack)
• Mounting Hole Diameter: ≈ 2.1 mm

Pinout and Wiring:

• VIN: Connect to 3.3V or 5V DC power source.
• GND: Connect to the common system ground.
• WSEL (Word Select): Connect to the I2S Clock/Word Select line (LRCK).
• DIN (Data In): Connect to the I2S Data Out pin of the host microcontroller.
• BCLK (Bit Clock): Connect to the I2S Bit Clock line.
• MUTE: Drive this pin high to silence the audio output. Furthermore, ensure this pin is tied low for active playback.

Datasheet Reference:

• Download NXP UDA1334A I2S DAC Datasheet

Commonly Used in:

• Raspberry Pi Projects: Adding audio output to Raspberry Pi Zero models that lack a dedicated headphone jack.
• ESP32 Web Radio: Providing the analog stage for internet radio streaming and podcast players.
• Arduino Sound Synthesizers: Enabling the generation of complex wave patterns and music files.

Applications:

• Portable Music Players: Creating DIY MP3 or FLAC players with high-quality analog conversion.
• Smart Home Voice Assistants: Delivering clear voice feedback in custom AI or smart speaker setups.
• Gaming Devices: Providing the sound system for retro-gaming consoles and handhelds.

Equivalent Models:

• PCM5102A Module: A similar 32-bit I2S DAC that offers high SNR and excellent dynamic range.
• MAX98357A: An I2S DAC with an integrated Mono Class D amplifier, however, it lacks the stereo output jack of the UDA1334A.
• ES8388: A low-power stereo audio codec often used in professional ESP32-audio development boards.

Package Includes:

• 1 x UDA1334A I2S DAC Stereo Decoder Module